Rogue · Assassination · tier 3 · from level 20 · needs 5 points in Malice

Lethality

+2.8 Backstab

5/5 · level 60 · per cast · and 5 more

Lethality 12345

Rank 5/5

Increases the critical strike damage bonus of your Sinister Strike, Gouge, Backstab, Mutilate, Ghostly Strike, and Hemorrhage abilities by 20%.

Backstab +0.8% +2.8 Mutilate +0.8% +1.8 Ghostly Strike +0.8% +1.3 Sinister Strike +0.8% +1.2 Hemorrhage +0.8% +1.0 Gouge +0.8% +0.6

Averages, counting crits and misses, for a level 60 Rogue with a typical weapon and no other gear or buffs, against a target your level. Worked out from the game's own data, the same way as the Foresight addon.